Ortalık sessiz olunca kendimi daha rahat hissediyorum.

Ortalık is a common Turkish word meaning the surroundings, the environment, the place around you, the general atmosphere.

In this sentence, it does not mean one specific object or location. It refers more generally to everything around you.

So Ortalık sessiz olunca... means something like:

• When it’s quiet around me...
• When the surroundings are quiet...
• When the environment is quiet...

It is a very natural word in everyday Turkish.

Both forms are possible, but they are slightly different in feel.

• sessizken = while it is quiet / when it is quiet
• sessiz olunca = when it becomes quiet / when it is quiet / once it is quiet

The suffix -ınca / -ince / -unca / -ünce often gives the sense of when or once something happens or is the case.

So:

• Ortalık sessizken kendimi daha rahat hissediyorum.
  = I feel more comfortable when it is quiet.
• Ortalık sessiz olunca kendimi daha rahat hissediyorum.
  = also I feel more comfortable when it’s quiet, with a slight sense of when it gets quiet / when it turns quiet.

In real speech, olunca is very common and natural here.

The ending -ınca / -ince / -unca / -ünce usually means:

• when
• once
• upon
• sometimes whenever

It attaches to a verb.

Here:

• ol- = to be / to become
• olunca = when it is / when it becomes

Other examples:

• Eve gelince ararım.
  I’ll call when I get home.
• Seni görünce sevindim.
  I was happy when I saw you.
• Yağmur başlayınca içeri girdik.
  We went inside when the rain started.

So in your sentence, sessiz olunca literally works like when it becomes quiet / when it is quiet.

Because sessiz is an adjective, not a verb.

Turkish often uses olmak with adjectives to express ideas like:

• to become
• to be in a certain state
• for something to be

So:

• sessiz = quiet
• sessiz olmak = to be quiet / to become quiet

Then:

• sessiz olunca = when it is/becomes quiet

English can often say simply when quiet, but Turkish usually needs the verb structure.

Kendimi is the reflexive form, meaning myself.

• beni = me
• kendimi = myself

In Turkish, when the subject and object are the same person, kendi is often used.

Here:

• hissediyorum = I feel
• kendimi hissediyorum = literally I feel myself

This is the normal Turkish way to say I feel ... when talking about your own state.

So:

• Kendimi iyi hissediyorum. = I feel good.
• Kendimi yorgun hissediyorum. = I feel tired.
• Kendimi daha rahat hissediyorum. = I feel more comfortable.

Using beni here would sound wrong.

Because it is the direct object of hissetmek.

Breakdown:

• kendi = self
• kendim = myself
• kendimi = myself (as a direct object)

The final -i is the accusative ending.

In kendimi daha rahat hissediyorum, the thing being felt is myself, so Turkish uses the object form:

• kendimi

This is just part of the standard pattern:

• kendimi iyi hissediyorum
• kendini iyi hissediyor
• kendimizi iyi hissediyoruz

daha means more, and rahat means comfortable, relaxed, at ease.

So:

• rahat = comfortable / relaxed
• daha rahat = more comfortable / more at ease / more relaxed

In this sentence, daha rahat hissediyorum means:

• I feel more comfortable
• I feel more at ease
• I feel more relaxed

Depending on context, all of these are good translations.

Because the sentence is about how the speaker feels, not simply about a fixed state.

Compare:

• Rahatım. = I am comfortable / I’m fine.
• Kendimi rahat hissediyorum. = I feel comfortable.

The second one focuses more on inner experience or how you feel emotionally/physically.

With daha:

• Daha rahatım. = I’m more comfortable.
• Kendimi daha rahat hissediyorum. = I feel more comfortable.

Both are possible, but kendimi ... hissediyorum is especially natural when describing personal comfort or emotional ease.

Because Turkish often leaves out subject pronouns when the verb already shows the subject clearly.

Here:

• hissediyorum ends in -yorum, which tells you the subject is I

So (Ben) kendimi daha rahat hissediyorum and kendimi daha rahat hissediyorum both mean:

• I feel more comfortable

The pronoun ben is usually omitted unless you want emphasis, contrast, or clarity.

For example:

• Ben kendimi daha rahat hissediyorum, ama o hissetmiyor.
  I feel more comfortable, but he/she doesn’t.

Yes, Turkish word order is flexible, although some versions sound more natural than others.

The given sentence:

• Ortalık sessiz olunca kendimi daha rahat hissediyorum.

is very natural.

A few possible variations:

• Kendimi ortalık sessiz olunca daha rahat hissediyorum.
• Kendimi daha rahat hissediyorum ortalık sessiz olunca.

These are understandable, but the original order is the most neutral and smooth.

A useful pattern to notice is:

• [when-clause] + [main clause]

So:

• Ortalık sessiz olunca = when it’s quiet
• kendimi daha rahat hissediyorum = I feel more comfortable

That structure is very common in Turkish.

Yes. Ortalık sessiz olduğunda kendimi daha rahat hissediyorum is also correct.

The difference is subtle:

• sessiz olunca = more everyday, direct, conversational
• sessiz olduğunda = slightly more formal or heavier in structure

Both mean roughly:

• when it’s quiet
• when the surroundings are quiet

Learners should know both, but olunca is especially common in spoken Turkish.

It can be either, and that is one reason the sentence feels natural.

Rahat in Turkish can mean:

• physically comfortable
• mentally relaxed
• emotionally at ease
• free from stress or pressure

In this sentence, it most likely means:

• I feel more at ease
• I feel more relaxed
• I feel more comfortable

because a quiet environment can affect both body and mind.

So rahat is broader than just physical comfort.

A word-by-word breakdown looks like this:

• Ortalık = the surroundings / the environment
• sessiz = quiet
• olunca = when it is / when it becomes
• kendimi = myself
• daha = more
• rahat = comfortable / relaxed
• hissediyorum = I feel

So very literally:

• When the surroundings are quiet, I feel myself more comfortable.

That literal English sounds unnatural, but it helps show the grammar.

Natural English would be:

• I feel more comfortable when it’s quiet around me.